如果需要在文档某个位置创建链接，用于快速跳转到文档内其他页面。可以通过创建Link注释，并为link增加文档内跳转动作文档实现。
示例代码如下：
void AddLink(FS_FloatRect rectLink, int pageIndex, int gotoPageIndex)
{
FR_Document frDoc = FRAppGetActiveDocOfPDDoc();
FPD_Document fpdDoc = FRDocGetPDDoc(frDoc);
FR_DocView frDocView = FRDocGetCurrentDocView(frDoc);
FPD_Object pPageDict = (FPDDocGetPage(fpdDoc, pageIndex));
FPD_Object annots = FPDDictionaryGetArray(pPageDict, "Annots");
if (annots == NULL)
{
annots = FPDArrayNew();
FPDDictionaryAddValue(pPageDict, "Annots", annots);
}
//跳转到下一页
FPD_Object pPageDict_goto = (FPDDocGetPage(fpdDoc, gotoPageIndex));
FPD_Page fpdPage_AddAnnot = FPDPageNew();
FPDPageLoad(fpdPage_AddAnnot, fpdDoc, pPageDict, false);
FPD_Object fpdObject = FPDDictionaryNew();
//set subtype of the annot
FS_ByteString strtype = FSByteStringNew3("Annot", -1);
FPD_Object fpdfstringAnnot = FPDNameNew("Annot");//strtype);
FPDDictionaryAddValue(fpdObject, "Type", fpdfstringAnnot);
FS_ByteString strSubtype = FSByteStringNew3("Link", -1);
FPD_Object fpdfstringSubtype = FPDNameNew("Link");//(strSubtype, 0);
FPDDictionaryAddValue(fpdObject, "Subtype", fpdfstringSubtype);
FPD_Object quad = FPDArrayNew(); //{x1, y1, x2, y2, x3, y3, x4, y5}
FPDArrayAddNumber(quad, rectLink.left); //x1
FPDArrayAddNumber(quad, rectLink.top);//y1
FPDArrayAddNumber(quad, rectLink.right);//x2
FPDArrayAddNumber(quad, rectLink.top);//y2
FPDArrayAddNumber(quad, rectLink.left);//x3
FPDArrayAddNumber(quad, rectLink.bottom);//y3
FPDArrayAddNumber(quad, rectLink.right);//x4
FPDArrayAddNumber(quad, rectLink.bottom);//y4
FPDDictionaryAddValue(fpdObject, "QuadPoints", quad);
FPDDictionarySetAtRect(fpdObject, "Rect", rectLink);
string strName = "LinkName";
FPDDictionaryAddValue(fpdObject, "NM", FPDStringNew(FSByteStringNew3(strName.c_str(), -1), FALSE));
FPD_Object c_dict = FPDArrayNew();
FPDArrayAddNumber(c_dict, 1);
FPDArrayAddNumber(c_dict, 0);
FPDArrayAddNumber(c_dict, 0);
FPDDictionaryAddValue(fpdObject, "C", c_dict);
FPD_Object bs_dict = FPDDictionaryNew();
FPDDictionaryAddValue(fpdObject, "F", FPDNumberNewByInt(4));
FPDDictionaryAddValue(fpdObject, "H", FPDNameNew("P"));
FPDDictionaryAddValue(bs_dict, "W", FPDNumberNewByInt(0));
FPDDictionaryAddValue(fpdObject, "BS", bs_dict);
//给Link注释 添加跳转动作
{
FPD_Action ac_dict = FPDActionNew2(fpdDoc, FPD_ActionType::GoTo);
FPD_Object dest = FPDArrayNew();
FPDArrayAddReferenceToDoc(dest, fpdDoc, FPDObjectGetobjNum(pPageDict_goto));
{
FPDArrayAddName(dest, "XYZ");
FPDArrayAddInteger(dest, 10);
FPDArrayAddInteger(dest, 750);
FPDArrayAddInteger(dest, 0);
FPD_Dest dest_new = FPDDestNew(dest);
FPDActionSetDest(ac_dict, dest_new);
}
int num = FPDDocAddIndirectObject(fpdDoc, FPDActionGetDict(ac_dict));
FPDDictionaryAddReference(fpdObject, "A", fpdDoc, num);
FPDDictionaryAddReference(fpdObject, "P", fpdDoc, FPDObjectGetobjNum(pPageDict));
}
int pos = FPDDocAddIndirectObject(fpdDoc, fpdObject);
FPDArrayAddReferenceToDoc(annots, fpdDoc, pos);
FRDocReloadPage(frDoc, pageIndex, false);
}
使用示例如下：
FS_FloatRect rect;
rect.left = 100.00;
rect.right = 300.00;
rect.top = 500.00;
rect.bottom = 450.00;
int pageIndex=0,gotoPageIndex = 2;
AddLink(rect, pageIndex, gotoPageIndex);
实现效果：会在页面中间创建一个可以点击的Link区域，点击后承接之前的缩放比例，跳转显示文档的第三页。
